Hot-air-distributing furnace



(No Model.) 2 ShetsSheet 1.

E. MOLLOY. HOT AIR DISTRIBUTING FURNACE.

No. 416,734. Patented Dec. 10, 1889.

i w/ IVESSES: I; I

(No Model a 2 Sheets-Sheet 2 E. MOLLOY. Y HOT AIR DISTRIBUTING FURNACE.

No; 416,734. Patented Dec.10, 1889.

wlrmsssrs; g m/ I/E/VTOR ATTORNEY I N, PiTERi Pholoulhcmbhur. Wishinghn. D. C,

' v m r i e I UNITED STATES [PATENT OFFICE EDMOND.l\/IOLLOY, OF PHILADELPHIA, PENNSYLVANIA.

HOT- AIR-DISTRIBUTING FURNACE.

SPECIFICATION forming part of Letters Patent No. 416,734, dated December 10, 1889.

Application filed May'Y, 1889. Serial No. 309,892. (No model.)

tical longitudinal section on the line a a of To all whom it nmy'ooncern:

Be it known that I, EDMOND MOLLOY, a subject of the Queen of Great Britaimresiding in the city of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Hot-Air-Distributing Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification. My invention relates to apparatus which may be classified under the title of hot-air fu rnaces, and has for its object the distribution of hot and cold air forced under pressure through the usual registers in buildings; and it consists, primarily, of a furnace frame or structure containing, as is usual, a fire-surface and escape-fines, and, in addition thereto, a steamboiler located over the fire surface, a separate air chamber or reservoir communicating through apertures with pipes leading to the registers in the building and communicating, also, with a coilof pipe located within the turn ace,between the combustionchamber and the draft-passage thereof, and terminating in a tube or tubes projecting through the side of the furnace structure; secondly, the combination therewith of tubes connected with the induction end of the coiled pipe, the other end of said tubes terminating in one or more rotary'fans provided'with air-induction tubes,

top view of the parts shownjnFig. 1. Fig. 3 is a vertical section on the line Z7 Z) of Fig. 4

of the furnace, structure and its contained parts, showing the arrangement therein of the steam-boiler, the coil of air-pipe, and the air chamber or reservoir; and Fig. 4- is a ver- Fig. 3, showing the like parts. r

The design of my inventionis to draw fresh air from the outside of a building, force it through the apparatus, heating it thereby in winter and cooling it in summer, and deliver it under a moderate pressure to the several registers in the building. The furnace-frame A is constructed, in the usual manner, with a grate G and an escape-flue E, but 1s so arranged internally that a horizontal or other boilerB may be located therein above the flame-surface, and at the top of the furnace structure is arranged an air-chamber D,forming the top of the furnace, with its under side constituting the top of the combustion-chamber of the furnace and receiving heat therefrom. In the space between the boiler and.

air-chamber D is arranged one or more coils of pipe F F, with the induction end F ex-.

tending through the side of the furnace structare and the eduction end F communicating with the base of the air-chamber D. The top surface of the air-chamberDis'provided with a series of outlet-openings F to which are connected the usual pipes from hotfair furnaces leading tothe usual discharge-registers in the building. Communicating with the induction-passage F of the coil of airheating pipe is a pipe or pair of pipes G t}, communicating at the other end with the discharge opening of a revolving fan-blower H, whichmay be constructed in any well-known. manner. In the drawings isshown a pair of such revolving fan-blowers slightly separated from each other and mmounted on a spindle which drives the fans, the spindle N being provided with a pulley-gearing n m, driven by an engine (shown in the drawings as a steam-engine) taking steam through the pipe L from the boiler Bin the furnace. It is obvious, however, that the boiler 13 may be.

steam is not required; or any other motive power may be used to drive the fans in the manner indicated. Connected with the inletopenings of therevolvin'g fan-blowers are pipes K, which I prefer to lead to the exterior of the building, where a supply of pure IOO fresh air can be obtained. It is obvious that y lie the arrangement of the blowers and its tubes relatively to the furnace and its contained elements may vary from that shown in the drawings without departing from the principle of the invention.

The operation is as follows: The fan-blo\vers will produce an inward current of air constantly and force it through the pipes G into the coil of pipe F, located in the furnace-chamber, where it will be heated in its passage through the same to the air chamber or reservoir D, the under side of which also receives heat from the combustion-chamber of the furnace, from whence it will be discharged under a moderate pressure through the eduction-passages F into the fines leading to the several registers in the building. machinery is used as a motive power for the fans, it will be seen that the same fire that heats the air delivered to the building will create steam in the boiler to drive the engine M, and that a constant-moving current of air is. at all times kept up through the apparatus. My improvement is equally applicable for hot-weather purposes. By a substitution of other steam-supply than from the boiler B, or of a different character of motive power not requiring steam, and the air-chamber B converted from a heating-chamber to a cooling-chamber, not only by the absence offire in the' furnace, but by the adaptability of the chamberD as a storage-reservoir for ice, the current of fresh air pumped into the same by means, of the fan-blowers will be discharged through the eduction-passages F and through the registers of the building as a current of cool air. I

' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1f steam' 1. A hot-air-distributing furnace consisting of the furnace structure provided with an airchamber, forming the top of the combustionchamber, with its under side exposed to the heat thereof, and provided with an eductionpassage, and a coiled pipe within the combustion-chamber communicating at one end with said air-chamber and at its other end with the. open air without the furnace, substantially as described.

2. A hot-air-distributing furnace consisting of a furnace structure provided with an airchamber, forming the top of the combustionohamber, with its under side exposed to the heat thereof and provided with an eduction pipe or pipes, and a series of independent coiled pipes Within the combustion-chamber, each communicating at one end with said airchamber andat its other end with the open air outside of the furnace, substantially as described.

A hot-air-distributin g furnace consisting of a furnace structure provided with an airchamber, forming the top of the combustionchamber, with its under side exposed to the heat thereof and provided with an eductionpipe, a coiled pipe within the combustionchamber communicating at one end with the said air-chamber and at the other end with the air outside of the furnace, and a fan for su'p plying air to said pipe, substantially as described.

In testimony whereof I have hereunto affixed my signature this 27th day of April, A. D. 1889.

EDMOND MOLLOY.

\Vitnesses:

ANDREW ZANE, A. T. BENTON. 

